The value of a baseball card can be represented by the equation where x represents the number of years that robert has owned the card and y represents the total value, in dollars, of the card. what was the value of the card when robert originally purchased it?

Plz need answer now will mark which situations represent linear functions? check all that apply. a)the temperature rises and falls over the course of a day. temperature is a function of time. b)a baseball is hit into the outfield. the height of the ball is a function of time. c)a car goes 55 mph on the highway. distance is a function of time. d)a child grew 2 inches this year and 1 inch last year. height is a function of time. e)a movie director makes 2 movies per year. the number of movies is a function of the years.

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?